A matter of timing As so often in life, the snowfall and its intensity and quantity on time sequences reasons that have to be coordinated.
Simply put, it's too hot and dry remains are nothing.
In Innsbruck, for example, saw a medium-small Föhnereignis Thursday night that the lower atmosphere was dry. As evidence to the meteorologists help the radiosonde ascents of several airports that provide information about temperature, humidity and wind supply.
being the two bold lines close to each other, the atmosphere is humid, as dew point (left) and temperature (right) move closer together. In yesterday's Sounding
proposes to settle this drought, especially in the lower layers, to about 3000m it is dry. The Windfiedern indicate the hair dryer, with 15 knots wind resources at 800 hPa level in the comb it was effective.
What sichzu changed today? At first glance, it has become much colder, the graphs are even closer together. The snowfall yesterday, 26.11. , the entire atmosphere mixed wet. In the higher layers of air (this time above 3000 m = 700 hPa) pays off POLAR AIR felt cold and dry. Guarantees for the today's sunny weather and the distant view of the mountains (pictures to follow). have been achieved
But until these atmospheric conditions, it took a little ...
The wind as a driving factor of the air masses blowing in Innsbruck initially quite strongly from West (vorföhnig ). Although it snowed already in the morning, the snow fell, however, rather large breadcrumbs from heaven to dry!
turned During the morning the wind to the east (90 degrees) and the cold air penetrated into the inner workings Inn Valley. Unlike the "Flat Land" where a front moves over it and with pressure drop and rise, and with the onset of precipitation ahead of current gust front is clear, it is more complex in some Alpine valleys.
Note in this case, the relative gain of the wind at about 14 UTC and the onset of snowfall
The Fieseln in the morning brought 0.1 mm of rain in the afternoon at least 2 mm (ie more than 2 cm snow).
The two cold air surges can be read even in the temperature and pressure profile. Again, humidity and pressure drop before the arrival of cold air from the lower Inn valley, then the pressure increases again significantly and the atmosphere is from the snow "soaked" (26.11. afternoon).
Altogether, it is probably still more complex, as the north of cold and dry air of the moist air from the south mixed. If the cold air was already in the Inn valley, it would certainly have more snow earlier. Hair Dryer offers in this case not be the ideal base for snow ...
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| Front map SAT 27.11. 00 UTC (c) wetterpate.de |
The most ideal conditions for snow there was this time again in the south, deep IRMI sought as the predecessor Gundula direct route from the Adriatic Sea to Hungary. During the "north" of the more bwz Restokklusion. Convergence line was affected.
way: Gundula depth is certainly not there anymore, Hanni and Jenna are waiting. More on the naming of the high and low pressure areas (for the moment the weather is more on the feminisitischen page ...) here:
http://www.met.fu-berlin.de/wetterpate/ amounts of fresh snow this morning (in cm):
Valley Lunz am See (615 m) 18
Feitritz (540 m) 13
Villach (490 m) 12
i.Innkreis Ried (430) 10
Dellach Drautal (630 m) 10
Kötschach-Mauthen (715 m) 10
Radstadt (860) 8
Reutte (830) 8
Mountain: (unaudited) Zugspitze 30
Kredarica 20
Rudolfshütte 15
Feuerkogel 12
Galzig 7
Dobratsch 4
total snow: Kredarica 230
Sonnblick 201
Zugspitze 130
Rudolfshütte 115
Galzig 97
Dobratsch 60
Obergurgl 48
Langen 37
Mariazell 23
Fresh Snow (3 days) in Switzerland: Long story short: fantastic views, snowy mountains and freezing cold temperatures, as the writer of this blog today was able to experience first hand.
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| North Chain: Brandjoch - Ms. Hitt - Long Saddle (0815 GMT today) |
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| class Bettelwurf (left) and Gr. Bettelwurf (right) |
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| meandering river Salzach with the City Salzburg and Flachgau |
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| Neusiedler See in the approach |
A Final Word: of recent events (
climate conference in Cancun, Mexico from
29.11. -10.12.2010 ) there in a pink-yellow quality newspaper a detailed special on climate and development. Recommended and charming are especially selected satellite images (also
ONLINE ) under which it treats are absolute, but also encourage reflection.
private so I may also promote make the competition: a new portal on climate change, the state weather service ready:
http://www.zamg.ac.at/klimawandel/ --------------- -------- Sources: radiosondes (1 +2): Univesity of Wyoming weather information Innsbruck (3.4 + 5): IMGI front card (6): wetterpate.de snow heights (3days) Switzerland (7): http://www.slf.ch/lawineninfo/schneeinfo/hn3d/index_DE photos (8,9,10,11): (c) Alpine . wetter / Clemens Teutsch